Answer:
If a state passes a regulation that impacts interstate commerce, it may violate the DORMANT commerce clause. To decide if the regulation is unconstitutional, the courts typically balance the INTERESTS of the state against the BURDENS on interstate commerce.
Explanation:
The Commerce Clause is not a law that limits how states can regulate commerce, but a power assigned to Congress so that it can regulate interstate commerce. The Dormant Commerce Clause prohibits states from passing legislation that regulates interstate commerce or international commerce, since only Congress has the power to do so. The dormant clause usually affects legislation that discriminates against out of state businesses in favor of domestic businesses, but if the laws affects equally both domestic and out of state businesses, then there is usually no problem with it.